No.1\fork-example.c
....\shm-client.c
....\shm-server.c
...2\no2c.c
....\no2s.c
....\string.txt
...3\without-avoiding\no3c1
....\................\no3c1.c
....\................\no3c2
....\................\no3c2.c
....\................\no3c3
....\................\no3c3.c
....\................\no3c4
....\................\no3c4.c
....\................\no3s
....\................\no3s.c
....\................\string.txt
...4\no4c
....\no4c.c
....\no4s
....\no4s.c
....\string.txt
...3\without-avoiding
No.1
No.2
No.3
No.4